Mechanism for operating fan-doors of thrashing-machines



(No Model.)

Z. MAOOMBER. MECHANISM FOR OPERATING PAN DOORS 0F THRASHING MACHINES. N0. 249,065.

Patented NOV. 1-, 1881.

11 1i IE E OILEO [E] O] N. PETERS. Fholu-Lnhugmphcr, Wnshmglon. D. Q

Unrrnn STATES PATENT ()rrrce.

ZEBEDEE MAOOMBER, OF BEDFORD, MICHIGAN.

MECHANISM FOR OPERATING FAN-DOORS OF THRASHING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 249,065, dated November 1, 1881,

Application filed July 6, 1881. (No model.)

To all whom it may concern:

Be it known that I, ZEBEDEE MAooMBER, of Bedford, in the county of Calhoun, and in the State of Michigan, have invented certain new and useful Improvements in Mechanism for Operating Fan-Doors of Thrashing-Machines, &c.; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, making apart of this specification.

The object of this invention is to provide suitable mechanism whereby either or both of the blower-doors of a grain-separator may be opened or closed and regulated at will from either side of the separator by the operator without necessitating passing around or under the machine to reach said doors, as at present required. Theseobjects I attain by themechanism illustrated in the accompanying drawings, in which Figure 1 represents a side elevation of. a separatorblower, and Fig. 2 represents a transverse vertical section on the line or or of Fig. 1, showing but one of the loose sleeves in section.

The letter Aindicates the frame of that part of the separator carrying the blower, and B one of the blower-doors or blinds, represented in the present instance as partly open and pivoted to the blower at f. p

The letter (J indicates two vertical shafts, journaled at opposite sides of the machine in suitable hearings in the frame A. The upper ends of these shafts have fitted to them loose sleeves h, provided with spiral springs g, which operate to hold the sleeves down upon the square shoulders tof the shaft, the sleeves being provided with properly-squared recesses l, for the purpose of engaging the shoulders. Both the shaft and the sleeves are provided with hand-wheels a and a, by which they may be operated. The lower ends of the shafts O are provided with screws 1), which engage pinions or toothed segments (1 on the respective doors of the machine, whereby the door or blind may be opened or closed by turning its shaft. Extending across and engaging suitable pulleys on the sleeves is an endless chain or belt, D.

The operation of my invention is as follows: When it is desired to open or close both of the doors or blinds of the blower simultaneously,

the operator turns either set of the four handwheels a a. a a, according to the side of the machine at which he is located. When it is desired to open either one of the doors or blinds without disturbing the other, the sleeve h is elevated on one of the shafts, so as to turn loosely thereon, when,by turning said sleeve, the door on the opposite side from the operator is operated. To operate the door on the same side the operator turns the shalt while the sleeve is elevated thereon.

The blower-doors in the present instance are represented as turning on pivots; but it is evident that with a modification of the gearing sliding doors might be substituted without departing from the spirit of my invention.

Having fully described my invention, what I claim, and desire to secure by Letters Patent, is-

In combination with the movable doors of a separator-blower, the shafts jonrnaled at opposite sides of said blower, and the gearing for operating the doors, theloose sleeves mounted on said shafts and adapted to engage and disengage the same, and the connecting chain or belt, substantially as and for the purposes specified.

2. In combination with the shafts, a chain or belt and loose pulleys, as described, the worm-gear attheir lower ends, and the pivoted doors, having pinions or toothed segments thereon, substantially as and for the purposes In testimony, whereof I affix my signature, in presence of two witnesses, this 25th day of June, 1881.

ZEBEDEE MAOOMBER.

Witnesses:

G. MACARD, A. O. DRAKE. 

